Magnification of spin Hall effect in bilayer electron gas

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dc.creatorJin, Pei-Qing
dc.creatorLi, You-Quan
dc.date2007-02-20
dc.date2007-10-25
dc.date.accessioned2026-07-07T08:50:42Z
dc.date.available2026-07-07T08:50:42Z
dc.descriptionSpin transport properties of a coupled bilayer electron gas with Rashba spin-orbit coupling are studied. The definition of the spin currents in each layer as well as the corresponding continuity-like equations in the bilayer system are given. The curves of the spin Hall conductivities obtained in each layer exhibit sharp cusps around a particular value of the tunnelling strength and the conductivities undergo sign changes across this point. Our investigation on the impurity effect manifests that an arbitrarily small concentration of nonmagnetic impurities does not suppress the spin Hall conductivity to zero in the bilayer system. Based on these features, an experimental scheme is suggested to detect a magnification of the spin Hall effect.
dc.descriptionRevtex 10 pages, 4 figures; largely extended version
dc.identifierhttps://arxiv.org/abs/cond-mat/0702456
dc.identifierhttp://arxiv.org/abs/cond-mat/0702456
dc.identifierPhys. Rev. B 76, 235311 (2007)
dc.identifierdoi:10.1103/PhysRevB.76.235311
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/144692
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleMagnification of spin Hall effect in bilayer electron gas
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